Электронный каталог

Статья

Phan, N.H.T.
Mn-Interconnected NiCo Layered Double Hydroxide Nanosheets on Ni Foam for Electrocatalytic Concurrent Glycerol Conversion to Hydrogen and Formate / N.H.T.Phan, E.A.Korneeva, Tiep Van Nguyen, [a.o.]. – Text : electronic // ACS Applied Nano Materials. – 2025. – Vol. 8, No. 42. – P. 20553–20563. – URL: https://doi.org/10.1021/acsanm.5c03908.

Utilizing KMnO&sub(4) and glycerol as co-precursors in a previously unexplored manner, we hydrothermally synthesized Mn-interconnected NiCo layered double hydroxide (LDH) ultrathin nanosheets directly grown on nickel foam (denoted as Mn–NiCo@NF-G). KMnO&sub(4) was used as a Mn source and a strong oxidant for generating Ni&sup(2+), while glycerol provided interlayer CO&sub(3)&sup(2–) ions and facilitated the formation of ultrathin LDH architectures. Comprehensive characterizations revealed that Mn was selectively incorporated into vacancy clusters of the Ni substrate and linked with Co, Mn, and O atoms via Mn---Co–O bonds, resulting in a robust interfacial coupling between the nanosheets and support. This unique structural configuration substantially enhanced charge transport and exposed a large electrochemically active surface area. The Mn–NiCo@NF-G electrode generated a current density of 10 mA·cm&sup(–2) at a low overpotential of 1.30 V vs RHE, and its Tafel slope was small (72 mV·dec&sup(–1)). Furthermore, the electrocatalyst remained stable for 20 h of continuous operation. Remarkably, the catalyst exhibited over 90% selectivity for oxidizing glycerol to formate, demonstrating its potential for efficient and selective biomass conversion. These findings suggested a Mn–NiCo@NF-G electrode to be an effective bifunctional electrocatalyst for concurrent hydrogen production and synthesizing value-added chemicals.



Спец.(статьи,препринты) = С 33 а - Нанофизика. Нанотехнология$
Спец.(статьи,препринты) = С 44 в - Новые химические реакции, соединения и реактивы
ОИЯИ = ОИЯИ (JINR)2025
Бюллетени = 15/026